Multi-Electron Configurations and Orbital Diagrams
Electrons are...
Question
Electrons are speed throughout the atom on different levels and subshells. The electron configuration for calcium is: 1s22s22p63s23p64s2 According to this configuration, how many electrons are found on the valence level?
A
2
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B
6
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C
8
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D
20
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Solution
The correct option is A2 The valence shell is outermost shell. Thus valence shell of Calcium is fourth shell, and it has 2 electrons in its valence shell. Thus there are 2 valence electrons in Calcium and thus answer is option A.